Left 4 Dead, Counter-Strike: Source and Day of Defeat will also soon receive similar updates.

The $150 Novint Falcon (shown left with optional pistol grip) was released in 2006. The three-dimensional "haptic" device is operated by a small spherical grip connected to three robotic arms.

The device's motors react to in-game events, with the end result being an elaborate force-feedback system. Damage jostles the grip accordingly, while weapons have different weights and produce varying amounts of kick-back.